Fastener



March 24, 1936. h A EMP E 2,035,023

FASTENER Filed'Qct. 17, 1955 2 Sheets-Sheet 1 f N Uszv Toe-- 14677-108 H 75/7/ 415 flrroeusly.

March 24, 1936. A, EMPLE 2,035,028

' FASTENER Filed 001; 17, 1935 2 Sheefs-Sheet 2 /NMEKVTOB:

a vmi I Patented Mar. 24, 1936 UNITED "STATES rssmaa Arthnr H. Temple, West Hollywood, alif., as-

signor of one-half to Joseph lenltam, Loo.

Angeles, Calif.

' Application'ootobes- 11, ms, Serial No. semis My invention relates to a fastening means for securing two members together and is of especial utility for securing together the edges of members having sheet form, such as fabric.

' Although the invention may be of relatively extensive utility, the present principal value and use thereof are conceived to be in a means for securing together the edges of members form- 'ing cooperative parts of a garment orother texhis tile fabric or rubberized structure, such, for instance, as the flaps of atom. The particular advantages of my present invention are that it forms a seam or joint of comparatively water.-

proof character, is cheaply constructed, is of 15 flexible character since it is made chiefly from rubber, and has no exposed metal parts of a character to ,catch in clothing.

It is an object of the invention to provides device of the above character having a pair of" 2D cooperating strip members which for convenience may be referred to as primary and secondary membersmne of which members is adapted to be held'in' a channel formed in the other of such members, the fastening device having gmeans for engaging and disengaging these primary and secondary strip members.

A further object of the invention is to provide a device of this character having primary and secondary strip members in inner and outer re- 30 lation. so constructed that when they are in engagement separation thereof as the result of tension applied to the sheet members to which they are applied'will be forcibly resisted. A further object of the invention is to provide 3:, in a device of this character inner and outer strip members formed with'parts in interengaging or interlocking relation contributing to the eifect of holding those members together inasturdy manner.

I in A further object of the invention is to provide a relatively simple sliding means having the utility of'progressivelyengaging or disengaging .the inner and outer strip members, depending upon the" directionof'movement of such means i3 lengthwise of the stripmembers.

continuous strip form and therefore may be made at a minimum cost and with minimum equipment.

Further objects and advantages of the invention' will be made evident throughout the follow- 5 ing part of the specification.

Referring to the drawings, which are for illustrative purposes only, and most of the figures of which are drawn toenlarged scale,

Fig. 1 is a fragmentary elevationalview show- 1 ing a form of my invention.

Fig. 2 is a cross section on a plane represented by the line 2-2 of Fig. 1, showing the inner and outer strip members in engaging position.

Fig.3 is a sectional view showing the relatively inner and outer strip members in side-by-side positions of disengagement.

Fig. 4 is a cross section on a plane represented by the line 4-4 of Fig; 1, showing the rearward end of-the operating device for engaging and dis engaging the strip members.

Fig.5 is a cross section on a plane represented by the line 5-5 of Fig. '1 looking toward the forward'end of the slider or operating member.

Fig. 6 is a sectional view of the slider taken 5 on a plane represented by the line 8-! of Fig. 1.

Fig. 7 is a fragmentary face view of another form .of the invention.

Fig. 8 is a cross section on a plane represented by the line 8-! of Fig. 7.

Fig. 9 is a cross section taken as indicated by the line 9-0 of Fig. 7.

Fig. 10 is a fragmentary perspective view showing a form of my invention having the general characteristics of the device disclosed in Figs. '7, 8, and 9 but having the movable latch means mounted within the outer strip member of the device.

Fig. 11 is a similar view cooperating with Fig.

10 for showing the slider or actuator means adapted for use with this last form of the invention.

Fig. 12 is a cross sectional view showing a fur- I ther form of the invention.

Fig. 13 is a cross; sectional view showing the innermember of Fig. 12. Fig. 14 is a cross sectional view showing the outer member of Fig. 12.

Fig. 15 is a cross sectional view showing a devlation from the form but employing the principles of the device shown in Fig. 12'.

The form of the invention shown in Figs. 1 to 6 employs an inner strip member 20 and an outer strip member 2| individually shown in cross section in Fig. 3 and which are preferably made from To disengage-the members 2|iand 2 I, it is necrubber compound. The inner strip member is of circular cross section and has a pair of channels 22 open to the leftward side thereof and lying on opposite sides of a thin wall 23, preferably of fabric, which extends leftwardlyfrom the bottom or back portion 24 of the member 25. These channels 22 are preferably semi-circular in cross section and lie within the fin portions 25 of the member 20 which extend leftwardly from the body portions 24. The outer member 2|, as shown in Fig. 3, is preferablyof approximately circular cross section having a thickened portion 28 on the right-hand side thereof to which the edge of afabric 211s secured, and extending semicircular walls or lips 23 of such size as to define an inner space or longitudinal channel 3|) slightly larger than but adapted to receive the strip member 20, there being beads or ribs 3| extending relatively inwardly from the leftward edges of the thin'wall'or sheet 23, and being of approximatelysemi-circular cross section so as to fill the channels 22 of the member 2|! when the inner and outer members 23 and 2| are in intere'1igage--v v ment as shown in Fig. 2, such interengagement garment or may be tapes adapted to be secured consisting of the placement or holding of the strip member 20 in the-space or groove 30' of the mem- .ber'2i so as to connect together the fabric parts 23 and 21 which may becooperating edges 'of a to cooperating edges of sheets or fabrics; The strip members 20 and 2| make what may be termedan interlocking engagement consisting of the hooking of the beads or lips 3| into the channels 22 of the inner strip member 20. This is accomplished by forming the channels 22 so that they are undercut in the direction of or toward the, bottom or back portion 24 of the inner strip member 2|. In the preferred practice of the invention the channels 22 are so placed that they define planes AA which are parallel to the plane of the sheet 23. Likewise, the beads 3| define the planes A--A.' The term define planes is used in the same sense asthe expression that a straight line is defined by two points or that three points which are not all in a straight line define a plane. From Fig. 2 it will be -per-. ceived that the ribs 3| formed along the edges of the fins or walls 23 are in interlocking engagement with the longitudinal channels 22 formed within the member 20 in a position facing and coextensive with the fabric 23. The interlocking engagement of these parts produces a very strong resistance to disengagement thereof by pull on the fabrics, 23 and 21 respectively in the directions of the arrows 32 and 33 of Fig. 2. With respect to the inner strip member 20, the channels 22 are .reentrant in character and are each formed between side walls which project from a bottom wall in such a manner that a channel of material depth is produced. Each channel 22 has a lip or fin 25 as one of its side walls, and the rightward portion of the sheet or thin wall23 as the other of its side walls, the rightward portion of the inner strip member 20 forming the bottom wall of the channels 22. It will be noted that the. side walls of the'channels 22, as represented by the rightward portion of the sheet 23 and the lips. in Fig. 2, are in a substantially parallel relation, at least through part of the distance through which they individually extend. In the manner shown, channels are formed between definite side walls, and such channels are of U-shaped relation or form.

member 2|i.

'essary to swing the fin portions 25 of the member 23 outwardly through the position thereof shown in Fig. 4to the position of Fig. 5, so that the semicircular ribs 3| may readfly move out of the longitudinai channels 22, and to spread the walls or fins 23 of the member 2| through the position of Fig. 4 to the position of'Fig. 5... This is accomplished by use of a slider or operator 34, the ends of which are respectively shown in Figs. 4 and 5. This device comprises a'metal wall 35 adapted to define within the confines thereof a longitudinal channel 35 with a slot 31 formed between the in Figs. 4 and5. In otherwords, the shape. of

1 space 33will be bent through the positions-shown the channel at the mi-ware endo'f the slider s4, as shown inFi .5, is suchthatthe flns or ii s the lips or walls and in a direction parallel to g p 23 willbe held ingfopen position .to permit entry of the member 23- into the space 30 between the lips. As the member 2| approaches the rearward end 43 of the slider: 34, the change in the shape 1 of the pass e 34 issuch that-the edges of the .25 walls 20 and the longitudinalribs tl'wm be curled in around the fins 25*of the member 2|l, with the result .that asthe parts 20 and 2|,leave the rearv ward end 4|io f the,slider,:theftension in the rubber material from. which these members are formed will causethem to' drop into positions of intereng'agement on substantially the line 2,-2'

of Fig. 1 and as shcwn'in Fig.2. As shown in Fig. ,4, the central portion 42 ofthe wall 35 is formed atthe rearward end of the slider 34 in,

such a manner that a space 43 will lie substan- I tialiy within the space 36, this space 43 forming one end of a channel for receiving the member 23 and for-partially openingthe. lips 25 of the As the central portion 42 of the wall 35 proceeds from the rearward end 40 toward the forward end '.4| of the slider, it tends to straighten out, as shown in Fig. 5, so that the space lying to the left thereof moves toward a position outside the end portions 44 of thespace 34. FIhespace 43 or rearward end of the channel 45 for receiving the member 231s formed entirely within a portion of the wall 35, but as the central portion 42 of the wall35 tends to straighten out,

as shown in Fig. 5, walls 45 of triangular form, as shown in Figs. 5'and 6, must be provided to cooperate with the central portion 42 of the wall in the forming of the channel 45 having a. longitudinalslot 41 through which the fabric 23'extends. The channel 45 is so formed that at the forward end thereof,'as shown in Fig. 5, the lips 25 of the member 23 will be held quite wide apart, the result being that as the slider 34 is moved in Fig.- 1, will pass from-the forward end 4| of the slider 34 in disengagement. A short distance from the end 4|, as indicated at 52, and 53, the

form, as shown in Fig. 3.. When the slider 34 is moved in a direction opposite to that indicated by the arrow 43, it will open the members 20'and 2| and move-themember '20 into the space 30 members 23 and 2| will reassume their normal members and mm: thefabrics n and :1.

, bination of parts comprising the inner strip I I member 28 and the outer strip member Ii wherein the leftward or free edges of the lips 25 are A feature of theinvention resides in a comheld-inwardly around the innerstrip member 28 by means such, for example. as the beads or fins 8| which connect the free edges of the lips 28:

to the inner stripmember. when the parts Ii are in the channels 22, the outward movement of the lips 28 is restrained. Since the outer strip member fl is'formed of rubber and must have flexibility, it is difficult to put sufficient strength in thewall thereof to effectively hold the outer strip member in closed relation around the inner strip members. This result is accomplished, however, by the provision of channels 22. in the inner strip member, which channels 22' extend lengthwise. along the inner .strip'member adiacent the sheet 28. It will be perceived that these channels 22 form undercuts in the direction of the, rightward side of the inner strip member 28, or, in other words,the side of the inner strip member 28 from which the sheet 28 extends. The leftward or free edges of the lips II are bent rightwardiy towardthe rightward side of the outer strip member ii, to whichrightward side the sheet}! is attached, and accordingly hook'into theundercut channels II of thefin'nerstrip mem- .ber. Each of the channels hasa continuous opening extending lengthwise of the innerstrip member 'along'and parallel to the sheet 28. In the preferred practice of the invention this opening or mouth which exists between the leftward edges of the fin portions and the sheet 23 is of lesser width than the interior or central portions of the channels 22. Likewise, the width of the mouth-of each channel 22 is preferably less thanthe depth of each channel, the word .depth" .meaning the dimension of the channel from the rightwardly into the channels 22. Such mouths are'in closed position or relation in Fig. 3 and are in open condition in Fig. 2. As shown in Fig. 3, the lips 25 forming parts of such mouths merely touch the cooperating portion of the sheet 23.

[and this fact does not change theex'stence of the-mouths 25s. The lips 25 are soformed that when they are flexed outwardly to open positions as shown in Fig.2, they exert an inward pressure 7 relative to the channels 22 and tend to press the outward movement. In the form of the invention showninFigs-i "I, 8,

heads Ii into the channels, 'therebyproducing an interlocking co -ensagement 1 between the free edges of the lips 28 andthe stripmember 28 to hold or restrain the edges of the 'lipsllagainst pandzii. I provide an outer member 'ofmoided rubber preferably'having'a reinforce lng wirell thereinand a longitudinal channel 01 formed between'wallrportions ligand 58. 'Of-ll;

size to enter the channel I'I,-'I;provide' a flat .rubberinner. strip 88 which maybe secured or I molded onto the edge of a=-fabric Ii, this inner strip having a series of t ngues 82 formed therein so as to project diagonally from openings 58 into a channel 54 formed on the inner face of the wall portion 58 of the member 55, so as to be in position for engagement with a shoulder 55 should force be exerted tending to pu1l the member 58 from the channel 51. The rubber tongues 82 form a series of latch dogs which operate to hold the members 55 and 80 together. For releasing these latch dogs, I provide a slider 58 adapted to slide along the wall portion 58 of the member 55 and having an outer wall 81. an intermediate or edge wall 68, and an inner wall 58 which passes within the channel 51 across the channel 54 ofthe wall portion 88. The inner wall 58 has triangular projecting ends 69a for engaging the leftward parts of the tongues 84 as the slider 88 is moved, with the result that these tongues will be depressed into the opening 88 and out of engagement with the shoulder to permit separation of the strip members 55 and 85, as shown in the upper part of Fig. '7.

' In the form of the invention disclosed in Figs. 7, 8, and 9, the latch dogs 52 are formed on the inner member or strip 60. In Figs. 10 and 11 I show the same principles of construction applied ber 13 is a shoulder 15 adapted to be engaged by a rubber strip 15 which projects diagonally downwardly from the upper wall ll of the member 10, the rightward edge of the portion 16 being Joined tion 111 In this form of the invention a slider 18 is provided of essentially the same form as the slider 55 shown in'Fig. '7 but functioning to lift the strip 18 from engagement with the shoulder I5 when it is desired to remove the inner portion ll from the channel-of the outer portion 10.

In the form of the invention shown in Figs. 1 to 6, the lips 25 have served in positions within the outer member 2| to force against the ribs 3| formed on the lips 28. InFigs. 12, 13, and 14 I show an inner member 80 having external means 8! for forcing ribs 82,formed upon lips or edge walls." of an outer member 84, into channels 85 provided for the reception thereof in the inner member. In this form of the invention the inner member 80 is substantially cylindrical. the grooves or channels 85 being formed along the rightward side thereof from which a fabric or other sheet 88 extends. To the right of the channels 85, lips or webs'8i extend upwardly and downwardly in parallel relation to the rightward with the rightward edge of the upper wall porportion of 'the body of 'the member 80. The

outer member 84 has a thickened body portion 88 at the leftward side thereof forming the inner ends of lips which support the ribs or beads 82. When the members 88 and 84 are in positions of lnterengagement, as shown in Fig. 12, the fins or lips 81 constituting the means 8 I press the ribs or beads 82 into the channels 85 in a manner to resist disengagement of these parts due to an outward pull exerted onth'zisheet' 88-andthc fabric or sheet 9| secured to the leftward side of the outer member 84.

In Fig. 15 I show another form of the invention in which external means'are provided for holding a rib or bead in areceptive channel. In this form oi". the invention an outer member I! is provided having a channel I! formed betweenor beads 95 of the strip member 02. The member 88' has extending flanges or lips 98 adapted to project in leftward projection across the rightward portions of the edge walls as for the purpose of holding the ribs or beads 95 in the channels 98 provided therefor. These lips or flanges as are of flexible material, as also are the edge walls 94, so that these parts may be flexed outwardly by the use of a suitable slider of the general character previously described herein, to enable ready engagement and disengagement of the cooperating parts 92 and 98.

Although I have herein shown and described my invention in simple and practical form, it is recognized that certain parts or elements thereof are representative of other parts, elements, or mechanisms which may be used in substantially the same manner to accomplish substantially the same results; therefore, it is to be understood that the invention is not to be limited to. the

details disclosed herein but is to be accorded the full scope of the following claims.

I claim as my invention:

1. A securing device of the character described, including: an inner strip member having the edge of a sheet secured thereto in longitudinal relation, there being a lip along said inner strip member forming a channel in said inner member along said sheet; and an outer strip member, having a groove-like opening therealong to receive said inner member, said outer member having a bead extending into said channel of said inner member, and said lip being formed so as to press said bead into said'channel.

2. A securing device of the character described, including: an inner strip member having the edge of a sheet secured thereto in longitudinal relation, there being a lip along said inner strip member forming a channel in said inner member along said sheet; an outer strip member having a groove-like opening therealong to receive said inner member, said outer member having a bead extending into said channel of said inner member, and said lip being formed so as to press said bead into said channel; and an operating device having sliding engagement with said inner and outer members shaped to disengage said bead from said channel and separate said inner and outer members.

3. A securing device of the character described, including: an inner strip member of circular cross section having an edge of a sheet secured thereto in longitudinal relation, there being a pair of lips extending outwardly from said inner strip member and in a direction back over and approximately parallel to said sheet so as to form reentrant channels in said inner member along said sheet and on opposite sides thereof; and an outer strip member having a pair of co-extensive lips forming-a groove-like, opening therealong to receive said inner member, said lips having beads along the edges thereof extending radially inwardly relative to said groove-like opening and into said channels of saidinner member.

4. A securing device of the character described, including: an inner strip member of circular acsacse cross section having an edge of'a sheet secured thereto in longitudinal relation, there being a pair of lips extending outwardly from said inner strip member and in a direction back over and approximately parallel to said sheet so as to form reentrant channels. in said inner memberv along said-sheet and on opposite sides thereof; an outerv strip member having a pair of air-extensive lips iorming a groove-like. opening therealong to receive said inner member, saidlips having beads along the edges thereof extending radially inwardly relative to said groove-like opening and into said channels of said inner member: and

an operating device having sliding engagement with said inner and outer members shaped to .flex said lips outwardly to disengage said beads from said channels and separate said inner and outer members.

5. A securing device of the character described, including: an inner'strip member of circular cross section having an edge of a sheet secured thereto in longitudinal relation, there being a pair of channels of substantially semi-circular cross section in said inner member along said sheet and on opposite sides thereof in facing extending into said channels of said inner mem- Y 6. A securing device of the character described, including: an inner strip member of, circular cross section having an edge of a sheet secured thereto in longitudinal relation, there being a pair of channels of substantially semi-circular cross section in said inner member along said sheet and on opposite sides thereof in facing relation; an outer strip member having a pair nice-extensive lips forming a groove-like'opening therealong-to receive said inner member, said lips having beads ,of substantially semicircular cross section along the edges thereof extending into said channels of said inner member; and an operating device having sliding engagement'with said inner and'outer members shaped to'flex said lips outwardly todisengage said beads from, said channels and separate said inner and outer members.

7. A securing deviceof the character described, including: an inner strip member having an elongated body portion with achannel formed-therein between side walls disposed in substantiallyv in, said channel being so formed that-its mouth is at least as narrow as the remaining portion 01."

said channel} and an outer strip member having a lip therealong adapted to enclosea part'of said body portion of said inner stripmember, there being a bead along said lip to lie in said channel,

f gated body portion with a channel formed thereand there being a lip formed on said inner member along said channel in a-position to bear resiliently against said named lip and first hold said head in said channel.

9. A securing device of the character described including: an inner strip member having the edge of a sheet secured thereto in longitudinal relation, there being a channel in said inner member along said sheet, the mouth of which channel has a width dimension which is less than the dimension of the depth of said channel, and

an outer strip member having a lip forming a groove-like opening therealong to receive said inner member, said outer strip member having an edge portion bent inwardly from the lip thereof into said'groove-like opening and so as to lie within said channel of said inner strip member.

10. A securing device of the character described, including: an inner strip member having the edge of a sheet secured thereto in longitudinal relation, there being a channel in said inner member along said sheet; an outer strip member having a lip forming a groove-like opening thereaiong to receive said inner member, said outer strip member having an edge portion bent inwardly from the lip thereof and in a direction parallel to said sheet into said groove-like opening and so as to lie within said channel of said inner strip member; and an operating device having sliding engagement with said inner and outer members shaped to disengage said edge portion from said channel and separate said inher and outer members.

11. A securing device of the character described, including: aninner strip member of circular cross section having an edge of a sheet secured thereto in longitudinal relation, there being a pair of channels in said inner member along said sheet and on opposite sides thereof; and an outer strip member having a pair of co-extensive lips forming a groove-like opening therealong to receive said inner member, said lips having edge portions bent inwardly therefrom in directions substantially parallel to said sheet and radially toward the interior of said groove-like opening and so as to lie in said channels of said inner strip member.

12. A securing device of the character described, including: an inner strip member having a channel extending longitudinally, said channel being formed between opposing, substantially parallel side walls and a bottom wall and having a mouth at the outer edges of said side walls; and an outer strip member comprisinga lip forming a longitudinal groove adapted to receive said inner strip member, said lip hes?- ing a bead portion bent inwardly from the edge portion thereof so as to extend through said mouth into said channel. 13. A securing device of the character described, including: an inner strip member having a channel extending longitudinally, said channel being formed between opposing, substantially parallel side walls and a bottom wall and having a mouth at the outer edges of said side walls; and an outer strip member comprising a lip forming a longitudinal groove adapted to receive said inner strip member, said lip having a bead portion bent inwardly from the edge portion thereof so as to extend through said mouth into said channel, said head portion being of such cross-sectional area as to substantially fill said channel and having opposing side faces presented to said opposing side walls of said channel.

14. A securing device of the character described, including: an outer strip member having a groove therealong; and an inner strip member having an elongated body portion fitting into said groove, there being bead and chameltio'nal area to said means on said strip members in interlocking engagement, said channel means being of such cross-sectional area as to have a constricted mouth, and said bead conesponding in cross-secchannel.

15. A securing device of the character de-' scribed, including: an inner strip member having an elongated body portion and comprising a substantially U-shaped wall forming a longitudinal channel along said inner strip member; and an outer strip member having a lip therealong adapted to enclose a part of said body portion of said inner strip member, there being a bead along said lip to lie in said channel, and there being means carried by said inner strip member bearing against said bead so as to hold the same in said channel.

16. A securing device of the character described, including: an inner strip member adapted to be secured to the edge of a sheet in longitudinal relation, there being a channel in said inner strip member along said sheet, said channel being undercut in a direction to define a plane parallel to the plane of an outer strip member having a groove-like I opening therealong to receive said inner strip member, said outer strip member having a. bead extending therefrom in a direction to define a plane parallel to said plane of said sheet and into said channel of said inner strip member.

17. A securing device of the character described, including: an inner strip member adapted to be secured to the edge of a sheet in iongitudinal relation, said inner strip member having a lip thereaiong forming a longitudinal channel adjacent said sheet; and an outer strip member having a groove-like opening longitudinally therein to receive said inner strip member, said outer strip member having a bead extending into said channel oi. said inner strip member, and said lip being so formed as to substantially enclose said bead and hold said head against outward movement in a direction away from the plane of said first named sheet.

18. A securing device of the character described, including: an inner strip member having the edge of a sheet secured thereto in longitudinal relation, there being a channel in said said sheet; and

inner member along said sheet; and an outer strip member having a lip forming a groove-like opening therealong to receive said inner member, said outer member having a bead extending from said lip into said channel of said inner member, said channel of said inner strip member being of such cross section that said channel will have a relatively narrow mouth.

19. A fastener of the character described, including: an inner strip member adapted to be secured to the edge oi a sheet; an outer strip member having a pair of lips forming a channel to receive said inner strip member, said lips extending across opposite sides of said inner strip member so as to substantially enclose the same; and means of co-engagement disposed at the free edges of said lips and forming an engagement between the free edges of said lips and said inner strip member for holding said edges against said inner strip member near the plane of engagement of said inner strip member with said sheet. v

20. A fastener oi the character described, including; an inner strip member having a sheet extending from one side thereof, there being a channel formed in said inner strip member so as to run lengthwise of said member adjacent said 6 v a,oas,oss sheet. said'channel forming an undercut in said memberinadirectiontowardthebackofsaid member; and an outer strip member having one side thereof adapted to be attached to the edge of a sheet and having the other side thereof forming lips defining a groove to receive said inner strip member, the iree edge of one of said. lips being bent inwardly toward said side of said outer strip member which is adapted to be attached to said second named sheet. so as to form a bead along said free edge which will hook into said channel of said inner strip member and restrain said free edge from outward movement relative to said inner strip member.

21. A fastener of the character described, including: an inner strip member having a sheet extending, from one side thereof. there being channels in said inner strip member extending lengthwise thereof adjacent opposite sides of said sheet so as to form undercuts in said inner strip member in a direction toward the back of said strip member; and an outer strip member having one side thereof adapted to be attached to the edge of a sheet and having the other side thereof forming lips defining a groove to receive said inner strip member, the free edges of said lips being bent inwardly toward said side of said outer strip member which isadapted to be athmhad is said second named sheet, so as to form beads along said free edges which will hook into said channels of said inner strip member and restrain said free edges from outward movement relative to said inner strip member.

22. A detachable fastening device of the character described, including: an outer strip member adapted to be secured to the edge of a sheet, said strip member having a lip forming a 10:1- gitudinal groove therein, said lip having a bead bent inwardly from the free edge thereof into said groove and in a direction toward said sheet so as to produce in conjunction with said lip a reversely curved hook; and an inner strip member adapted to be secured to a second sheet and to extend into said groove so as to be substantiaily enclosed thereby, said inner strip member having a side wall forming a channel along said second sheet to receive said head of said lip, said side wall of said inner strip member overlying said head when said bead is in said channel and restraining said bead and said edge of said lip of said outer member from outward movement in a direction substantially normal to the plane of said second sheet independently of forces applied to said strip members to separate the edges of said sheets which are fastened together by the device.

ARTHUR H. TEMPLE.

CERTI'EICATE or GORBECTION.

Patent No. 2,035,02e. 4 March 24, 1936.

' ARTHUR H. TEMPLE.

Y It is hereby certified that error eppeerB in the printed specification of the above numbered patent requiring correction as follows: Page 4, second column, line '73, claim 8, strike out the word "first" and insert the same efte: "said" first occurrence,- in same line; and that the said. Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of April, A, D. 1936.

. Leslie Frazer (Seal) Acting Commissioner of Patents. 

